I like it back there too. However, I noticed that my sliding window seal lets in a drip of water when it's wet. It drips on the compressor, but not the radio. Getting new window seals is in the cards for me apparently. The other thing that is a "gotacha" is making sure that your radio mounting bracket holds the radio very close the qpm...other wise it may stick out too proud to attach the plastic trim. Mine Baaaaarly clears.
Honestly I love the QPM in concept. In practice it's kind of challenging to work with. It's a pain to squeeze in that spot and challenging to work on electrics when it's mounted. Some folks may beagle to get the layout just right before you install it, but I had to make adjustments. Then there is the issue that if you drop a faster and it falls under it, it becomes difficult to retrieve even with magnets and claw retrievers (like the little negative bus machine screws on the blues fuse block). I found running cable back to the QPM to be the biggest PITA since real estate is at a premium and you can only fit so much behind the plastic and in the channel along the carpet. That being said I like that it's all hidden away, and it is accessible and it is otherwise dead space.
It does let us aspire to have a clean and tidy wiring setup. I can hardly look at an inline fuse without cringing anymore...